Finding the Fourth Proportional to 1,050.87, 1,575.69 and 401.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.87 : 1,575.69 = 401.25 : x
2. Step 2: Convert to fraction form
   1,050.87/1,575.69 = 401.25/x
3. Step 3: Cross multiply
   1,050.87x = 1,575.69 × 401.25
4. Step 4: Simplify right side
   1,050.87x = 632,245.61
5. Step 5: Solve for x
   x = 632,245.61/1,050.87
6. Step 6: Final answer
   x = 601.64